1. **State the problem:** We need to evaluate each expression and then find the corresponding letter from the table based on the answer. 2. **Evaluate each expression step-by-step:** - Expression 1: $1 + (18 \div 3) \cdot 2$ - Calculate inside parentheses: $18 \div 3 = 6$ - Multiply: $6 \cdot 2 = 12$ - Add: $1 + 12 = 13$ - Expression 2: $18 \div (10 - 8) \cdot 3$ - Calculate inside parentheses: $10 - 8 = 2$ - Divide: $18 \div 2 = 9$ - Multiply: $9 \cdot 3 = 27$ - Expression 3: $2 + 7 \cdot 3 - 19$ - Multiply: $7 \cdot 3 = 21$ - Add and subtract: $2 + 21 - 19 = 4$ - Expression 4: $9 - 6 \cdot 2 \div 3$ - Multiply: $6 \cdot 2 = 12$ - Divide: $12 \div 3 = 4$ - Subtract: $9 - 4 = 5$ 3. **Match answers to letters from the table:** - $13 \to G$ - $27 \to H$ - $4 \to F$ - $5 \to C$ 4. **Final answer:** The letters in order are **G, H, F, C**.